---
title: "Upgrading to AG Grid 34.1"
description: "See what's new in AG Grid, view a full list of changes and migrate your $framework Data Grid to version v34.1."
migrationVersion: "34.1.0"
---

Tree Data with Master Detail, Test IDs, Compact Column Headers, Grid Context in Integrated Charts, Accessibility Improvements.

## What's New

AG Grid {% migrationVersion() %} adds important new features – [Tree Data with Master Detail](./master-detail-other/#tree-data), [Test IDs](./testing/#test-ids), [Compact Column Headers](./column-headers/#hide-padded-column-headers), [Grid Context in Integrated Charts](./integrated-charts-customisation/#accessing-grid-context-in-formatters), Accessibility Improvements, as described in the [release post](https://blog.ag-grid.com/whats-new-in-ag-grid-34-1/).

These improvements involve no breaking changes as listed below.

<!-- 
Documentation to the highest patch release of the major/minor
NOTE: This will not show if the current library version is the same as the migration version
-->
{% documentationArchiveSection version=migrationVersionPatch() /%}

## Breaking Changes

There are no breaking changes in AG Grid version {% migrationVersion() %}.

## Behaviour Changes

There are no behaviour changes in AG Grid version {% migrationVersion() %}.

## Removal of Deprecated APIs

There are no deprecated API removals in AG Grid version {% migrationVersion() %}.

## Deprecations

There are no deprecations in AG Grid version {% migrationVersion() %}.

{% changelogSection version=$migrationVersion /%}